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On a Subclass of Three-dimensional Harbonic Functions Sefined by the Begmann-Whittaker Operator

P. L. RosenthalM. Skwarczynski

出版	Suomalainen Tiedeakatemia, 1968
URL	http://books.google.com.hk/books?id=xj1OewAACAAJ&hl=&source=gbs_api